Is it possible to dynamically load a @safe function from a shared library ?

Steven Schveighoffer schveiguy at
Fri Mar 13 20:31:16 UTC 2020

On 3/13/20 4:22 PM, wjoe wrote:

> I wasn't aware that pragma(mangle, ..) can practically name any function 
> anything. So from what I understand, because, at least on Posix, since 
> there's only a symbol name there's nothing I can do in my loader to 
> verify that a function is or does what it claim to be/do.

But that's the same as the linker anyway. It's possible to stub the 
function as @safe, but implement it as @system and just pragma(mangle) 
the thing. Therefore the compiler is no safer.

I would expect that something could be written to turn a signature 
string into a mangling and also provide the correct type upon return. 
Something like:

auto f = getFunction!(@safe void function(int))("package.module.symbol");

and have it properly mangle the expected function name and pull it from 
the dynamic library.


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